Burner-regulator.



PATENTED MAY 14, 1907.

H. LEMP. BURNER REGULATOR. APPLIOATION FILED JULY 15, 1901;

2 SHEETS-SHEET 1.

\l\/E \l n Hermann Lem I lnvento r": Her'rn'ann Lamp, M w aw MM;

H. LEMP. BURNER REGULATOR.

APPLICATION I'II-ED JULY 15, 1901.

2 SHEETS-SHEET 2.

Witnesses:

PATBNTED MAY 14, 1907.

- are arranged to sup example.

. ner. r In the accompanying drawings attached a side elevation of an automobile.

4 five pounds on the fuel tank will be suflicient 'To all whom it may concern.-

UNITED sTAr S PATENT OEEICE.

EERMANN LEMP, or LYNN, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO GENERAL ELECTRIC COMPANY, YORK.

BURNER-REGULATOR- Specification of Letters Patent. Application ma July 16.1901. -Serlal No. 68,347.

No. 853,808. Patented'May 1a, 1907.

Be it known that I, HERMANN LEMP, a is a pipe C which is provided with a filter D citizen of the United States, residing at Lynn, to prevent impurities in the fuel from passing county of Essex, State of Massachusetts, to the burner. have invented certain new and useful Impipe E provements in Burner-Regulators, of which i the following is a specification. l fuel to flow to the burnerin the direction of The present invention relates to regulators the arrow but prevents it from returning due employed to control the supply of liquid fuel to back pressure from any cause. In addito burners, and is more especially intended 1 tion to the check valve F between thepipes for automobile service although it is applica- C and E, a valve C is provided whereby the ble to otheruses. v l delivery of fuel to the burner may be regu- In operating a self propelled vehicle the enlated; this valve is adjusted for the maximum ergy required'to drive it varies greatly as the delivery and forms no part of the automatic character of the road changes, and inorder to regulation. When it is desired to leave the vehicle for any lengthof time the valve may,

operatethe same economically, the amount of fuel delivered to the burner should be aui be closed, thus entirely cutting off the fuel supply. A second regulating valve Ef is tomatically varied in accordance with the t demand-made on,the boiler for steam. The placed in the fuel pipe E so that the feeding object of provide l of the burner due to the air pressure in the Connected to the pipe C is a which leads to the burner, and mount ed in this pipe is a check valve F thatpermits l nected to the under portion of the fuel tankdesired to put more fuel in the tank. Con-. l

the present invention is to aregulator for a system of fuel supply, which regulator is so arranged that the supply of fuel to the burner is always maintained in accordance with the demand on the boiler for steamjand this in a simple and reliable man-' to and made a part of this specification, Figl ure 1 "illustrates diagrammatically an eml bodiment of my invention wherein the parts ply the necessary amount of fuel to a flash boiler, and Fig. 2 represents Q A representsa tank which is more or less 1 filled with a liquid fuel such as kerosene for The-fuel in the tank is, when the system is in operative condition, under a certain air pressure, derived from the small to supply the necessary amount of fuel to the burner when the fireis banked, or in other words, is reduced to a point where it is suflicient'tokeep the vaporizer and burner parts hot so that they are in condition for instant startin'g. Mou nted on the tank is a small pressure gage A'to indicate to the operator the air pressure therein. In the pipe leading from the pump B to the tankis a small cock B by means of which the air pressure on the tank may be reduced. 1 This would be done when it was intended to leave the vehicle for' f a considerable'length of time or when it was in going up a steep grade.

tank can beadjusted or cut off entirely, as

\ desired.

The burner may be of any suitable kind, the one illustrated consists of a nozzle H, a baffling-plate I'for and a vaporizer'J. Situated in a manner to be acted uponby the burner is a boiler K, which in the present instance is shown as being of the flash type, but any other suitable form of boiler may be employed if desired. Water enters the boiler through the inlet pipe L, and after passing through the various coni i volutlons of the boiler tubing leaves as steam through the delivery ipe M.

In order to supply. t e necessary amount of fuel to the burner when the vehicle is in operation, or when power is required when the system is employed for other service, an automatic power pump N is employed having the usual controlling valves pump is driven by means of an eccentric Q placed on one of the vehicle axles or on some other driven shaft. delivering fuel to the burner at all times at a definite pressure, such .as- 30 pounds for example, even when the eccentric is moving very slowly as would sometimes be the case This means that some compensating or governing device must be provided to take care of the excess fuel supply when the demand for steam is light. Such a device is provided in the com-7 0 and P. The

The pump is capable of A CORPORATION OF NEW distributing the flames driving shaft,

, ered by the pump is supplied to the burner,

R and R represent stationary guides, and mountedthereon is a sliding cross-head S which is rigidly secured to the pump piston. Connected to the shaft of the eccentric is a sliding cross-head T, and between this crosshead and the pump cross-head S is a stiff spring U. Between the piston cross-head and stationary abutments on the cylinder are coiled compression s rings V, which surround the guides R and these springsare intended to compensate for friction and to return the piston to the outer end of its stroke when the eccentric moves the crosshead T to the outer end of its stroke.

As the back pressure on the pump rises to a maximum the piston stroke becomes shorter and shorter, until finally the piston stands still. In the meantime the stroke of the cross-head T continues the same as before since it is connected to the'eccentric. on the but the difference in movements between the cross-heads is taken up by the coiled com ression s ring U. Thus the pump is enabl ed to de iver a variable quantity of fuel, and thereby tends to maintain the pressure of the fuel substantially constant.

Extending between the fuel pipe C and the burner is a pipe Cf which includes the pump N. The passage of fuel from the pump to the. burner is under the control of a steam pressure regulator comprising a diaphragm W and a spring pressed plunger X which. varies the opening in the fuel controlling valve Y. As the steam pressure on the diaphragm rises, the plunger X more nearly'closs the valve opening and therefore reduces the supply of fuel to the burner. On the other hand when the pressure falls, the s ring withdraws the plunger from the va ve opening and permits more fuel to flow to the burner W en "the pump is in o eration thereturn of fuel to the tank through the auxiliary supply pipe is prevented b means of the check valve in the latter,- so that" all the fuel delivand the pressure of the fuel in the auxiliar supplypipe, on the burner side of the check valve, is always the same as that which exists at the burner. In other words the high pressure supply of fuel controls the low pressure supply as respecting the supply of uel by the atter to the burner, thus rendering the auxiliary supply subordinate to the main or high pressure supply. When, by reason of high pressure in the steam boiler, or when the pump ceases operating, there is a cessation of the high pressure supply the pressure on the check valve is immediately removed and the auxiliary suppl comes mto service in direct continuity to t e cessation of the main fuel supply. This arrangel are liable to leak, and it l also presents advantages over those systems wherein a high pressure is constantly maintained on the fuel tank for the same reason.

When the steam pressure rises to a predetermined point it closes the valve Y and therefore the passage of fuel from the pump to the burner ceases, but the tank A continues to supply fuel to the burner through the pipes C and E owing .to the air pressure contained therein. twill thus be seen that a small amount of fuel is supplied to the burner at all times whenthe system is in operation. When the boiler pressure falls the valve V opens and the pump N resumes its duty of supplying fuel to the burner.

Referring to Fig. 2, I have illustrated a self-propelled vehicle in side elevation, wherein Z represents the vehicle body and Z the wheels. K represents the boiler -asing which incloses the boiler tubes, and .\l indicates the engine which receives steam from the boiler. Mounted on the rear axle is an eccentric Q, which is connected to the pump N through afiexible connection. At L is indicated in dotted lines the water tank which supplies water to the boiler through the pipe L. The speed of the engine is controlled by the throttle lever M and the reversing lever M The fuel tank A is situated in the front of the vehicle body and is suitably inclosed.

In accordance with the provisions of the patent statutes, I have described the prin ciple of operation of my invention together with the apparatus which I now consider to represent the best embodiment thereof; but. I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States, is.

1. In combination, a burner, a single source of fuel supply, separate conduits receiving fuel from said source and delivering it at different pressures to the burner through a common delivery pipe, a check valve included in one of the conduits which opens and permits fuel to flow to the burner under a given condition as to pressure and which closes and prevents it from flowing when the other conduit is in service, and means con trolling the other conduit.

2. In combination, a burner, a conduit for delivering a low pressure supply of fuel thereto, a check valve in said conduit and means for delivering a high pressure supply of fuel to the burner, the said latter means when operating causing the fuel of high pressure to actuate said check valve to interrupt the supply of fuel through the meansfor delivering the low pressure fuel. supply.

generating system, the combination of a fuel supply tank, means for creating an air pressure within the fuel tank, a burner, a connection from the tank to the burner, a check valve in the connection which freely admits fuel to the burner at, all times, but prevents it from working backinto the tank, a second connection between the tank and the burner, a pump in said second connection for increasing the fuel pres sure between the tank and burner, which pump is driven from a source of power having a constant stroke, a means for permitting the stroke of the pump to vary, and a device acted upon by the steam pressure of the creasing the pressure between the tank andthe burner, a check valve in the other connection, means for varying the stroke of the pum a valve for regulating the fuel supplie by the pump, and means acted u on by the steam pressure for moving the va ve.

5. In a steam generating system, the combination of a fuel tank, means for creating an initial air pressure in the tank, a burner, a'

" connection between the tank and the burner,

a pump in theconnection for increasing the pressure of the fuel delivered to the burner, a second connection leading directly from the tank to the burner so that fuel will be shunted around the pump to the burner when the pump for any reason is not delivering fuel to the burner, a check valve in the second connection and a steam-actuated valve for regulating the delivery of the fuel pump.

6. In combination, a burner, a conduit for supplying fuel to the burner at a low pressure, a check valve in said conduit and means for supplying fuel to the burner at a relatively I high pressure which operates to close the valve and interrupt the supply of low pressure fuel and to permit the valve to open for the continuance of low ressure fuel supply upon cessation of the high pressure supply.

7. In combination, a single burner, a single source of fuel sup ly under pressure, means for supplying fuel therefrom to the burner at a predetermined pressure, mechanically actuated means capable of irregular intermittent action for supplying fuel to the burner at a pressure exceeding that of the other sup lying means, and means whereby the supp y of fuel through the means for delivering the fuel at a low pressure will be discontinued upon the operation .of the means fer delivering fuel at a high pressure.

8. In combination, a burner, a source of fuel sup ly under a predeterminedpressure, means far supplying fuel to the burner at substantially said pressure, a power means for supplying fuel to the burner at a rela tively high pressure, supply of fuel through the means for del1 vering the fuel at a low pressure will be dis continued upon the operation of the means for delivering fuel at a high pressure.

9. In combination, a burner, a single source of fuel supply under an initial pressure, two independent conduits directly connecting the burner and source of fuel supply and receiving fuel at the same pressure therefrom, one conduit being adapted to supply and means whereby the fuel from said source to the burner at acon- 1 stant pressure and the other conduit to supply fuel also from said source to the burner at pressures va ing approximately from imtlal to pressures 'gher than that of the source, and a means in the first conduit for preventing fuel supplied by the other conduit from flowing back to the tank.

10. In combination, a burner, a single source of fuel supply under an initial air pressure, independent conduits leading directly from the source of fuel supply to the burner,

'a device in one conduit which permits the fuel to flow from said source to the burner at substantially the pressure on the source and prevents a reverse flow of fuel, and means in.

the other conduit which receives fuel from said source and supplies it to the burner at variable pressures which are higher than that of the source of supply.

11. In combination, a burner, a source of fuel supply under pressure, independent con- (luits extending from the source of fuel sup-.

ly to the burner, one conduit for supplying-- u'el at the pressure derived from the source of fuel supply, means in whereby the fuel may be supplied to the burner at a higher pressure than by the other conduit, and means whereby the supply of fuel through the meansfor delivering the fuel lOO the other condnitrf' at a low pressure will be discontinued upon the operation of the means for delivering fuel at a high pressure.

12. In combination, a steam generator, a burner therefor, a source of fuel supply under air pressure, a main supply connection and an auxiliary supply connection between said source and the burner, a pump in the main supply connection, and a means in the auxiliary supply connection which prevents the supply of fuel from the main connection from flowing back to the source of fuel supply and interrupts the auxiliary supply of fuel to the burner.

13. In combination,- a' steam generator, a burner therefor, a source of fuel supply under air pressure, a main and an auxiliary supply connection between the source and burner, a means in the main supply connection which increases the pressure of the fuel supplied to the burner to a point above that of the source,

supply connection a valve in the auxiliagy rom passing there- Which' '-prevents fuel through from the main supply connection and also interrupts the auxiliary supply, and

a single means contr olled by the steam in the generator for regulating the main fuel suption, a pump in the fuel at a constant device for checkin delivered by the 14,- In combination, a steam burner therefor, a source off air pressure, an auxiliary connection, a main 'fuel fuel supply pipe supply pipe conneclatter tending to deliver pressure to theburner, a

the reverse-flow of fuel pump through the former connection, and means in the main fuel sup ply connection adapted to be acted upon by the boiler pressure for directly controlling the quantity of fuel by the pump and i delivered to the burner ndirectly to control the l generator, a l uel supply under auxiliary fuel supply through the fuel delivered by the pump,

15. In combination, a generator, a burner therefor, a pump for supplying fuel to the burner, an automatic regulator for the pump, a steam-controlled regulator for controlling the quantity of fuel delivered by the pump, a conduitfor' supplying fuel to the burner when the steam controlled regulator interrupts the supply from the pump or when the pump is idle, and a device for preventing backward flow of the fuel in said conduit.

In witness whereof, I have hereunto hand this 12th day of July, 1901.

HERMANN LEMP.

set my Witnesses:

ALEX. F. MACDONALD, DLTGALD MCK. McKlLLor. 

